When we hear someone says "Enough is enough", we know that it is about something unpleasant.
No one would use that phrase when there is too much food, or having too much fun, or having too much of a good time, or even having too much money.
When some says that "enough is enough", it could be because that person has reached a limit.
That phrase is usually said out of frustration and disappointment.
The 1st reading didn't have that phrase, but it was clear that God was frustrated and disappointed with His people over their repeated unfaithfulness.
God wanted to be merciful and forgiving but His people couldn't be bothered, even though God sent prophets to warn them over and over again.
So when enough was enough, it resulted in Samaria being wiped out.
Yes, God is patient, merciful and forgiving. But God also cannot be taken for granted.
We may not anger God so much that He would do to us what He did to Samaria.
Let us strive to please God by doing what He wants of us and to be loving always. We can never do enough of that.